Performance Monitoring Infrastructure settings
Use this page to specify settings for performance monitoring, including enabling performance monitoring, selecting the Performance Monitoring Infrastructure (PMI) module and setting monitoring levels.
To view this administrative console page, click...
Servers | Application Servers | server | Performance Monitoring Infrastructure (PMI)
Configuration tab
- Enable Performance Monitoring Infrastructure (PMI)
Specifies whether the application server attempts to enable PMI. If an application server is started when the PMI is disabled, you have to restart the server in order to enable it.
- Use synchronized update
Specifies whether access to PMI counters (for example, updates to the counters) is synchronized. There is some performance overhead associated with enabling synchronized update. The default setting is false.
- Currently monitored statistic set
Specifies a pre-defined set of PMI statistics for all components in the server.
As part of fine-grained control feature, WebSphere Application Server, V6.0 provides new statistic sets, which are pre-defined, fixed server-side sets based on the PMI statistic usage scenarios. This enhancement allows a set of statistics to be enabled via a single action or call. The following statistic sets are defined:
- None
- All statistics are disabled.
- Basic
- Provides basic monitoring for application server resources and applications. This includes J2EE components, HTTP session information, CPU usage information, etc., plus the top 35 statistics. This is the default setting.
- Extended
- Basic setting plus additional WAS components (WLM, Dynamic Cache, etc.). Extended provides key statistics from frequently used WebSphere components.
- All
- Enables all statistics.
- Custom
- Provides fine-grained control with the ability to enable and disable individual scholastics. Fine-grained configuration is stored in the pmi-config.xml file.
Runtime tab
- Use synchronized update
Specifies whether access to PMI counters (for example, updates to the counters) is synchronized. There is some performance overhead associated with enabling synchronized update. The default setting is false.
- Persist my changes
Specifies whether changes to the runtime are also persisted for use on subsequent server startups, and not just the current server runtime. The default setting is false.
- Currently monitored statistic set
Specifies a pre-defined set of PMI statistics for all components in the server.
As part of fine-grained control feature, WebSphere Application Server, V6.0 provides new statistic sets, which are pre-defined, fixed server-side sets based on the PMI statistic usage scenarios. This enhancement allows a set of statistics to be enabled via a single action or call. The following statistic sets are defined:
- None
- All statistics are disabled.
- Basic
- Provides basic monitoring for application server resources and applications. This includes J2EE components, HTTP session information, CPU usage information, etc., plus the top 35 statistics. This is the default setting.
- Extended
- Basic setting plus additional WAS components (WLM, Dynamic Cache, etc.). Extended provides key statistics from frequently used WebSphere components.
- All
- Enables all statistics.
- Custom
- Provides fine-grained control with the ability to enable and disable individual scholastics. Fine-grained configuration is stored in the pmi-config.xml file.